Re: st: R: linear regression question

the relative change in y associated with a unit change in x in such
models works out as antilog(beta) on the appropriate base. in this case,
because galina explicitly mentioned natural log, and using carlo's
example, it is exp(.2) = 1.2214, a 22.14% increase. try with base-10 and
you will get something completely different.

the approximation 100*beta% works better and better as beta approaches
zero (and as the log-transformation base approaches 1, but that's not
typical in practice). in the stata journal article referred to below,
beta=.0741516 and exp(beta)=1.07697, arguably close to 1.07415. in other
cases, the difference might be to an extent you do not want to ignore.